1-(p-Methoxyphenyl)-2-propanone → 4-Dimethylamino-3-(4-methoxyphenyl)-3-buten-2-one
反応式
[CH3:1][O:2][C:3]1[CH:8]=[CH:7][C:6]([CH2:9][C:10](=[O:12])[CH3:11])=[CH:5][CH:4]=1.OC[CH2:15][N:16]1[C:20](=O)C2=CC=CC=C2[C:17]1=O>CN(C)C=O>[CH3:15][N:16]([CH3:20])[CH:17]=[C:9]([C:6]1[CH:7]=[CH:8][C:3]([O:2][CH3:1])=[CH:4][CH:5]=1)[C:10](=[O:12])[CH3:11]参加物
4
反応条件
- 温度
- 85 °C
実験手順
To a stirred solution of 1-(4-methoxy-phenyl)-propan-2-one (1, 8.37 g, 51.0 mmol) in N,N-dimethylformamide (200 mL) was added dimethoxymethyl-dimethyl-amine (2, 27 mL, 203 mmol). The reaction mixture was then stirred for 18 h at 85° C., allowed to cool to ambient temperature and excess solvent and reagents were removed under reduced pressure to give crude 4-dimethylamino-3-(4-methoxyphenyl)-but-3-en-2-one (3) as yellow oil which was used in the following step without further purification.